Iolite sunstone is a remarkable combination stone: cordierite's violet-blue body glittering with oriented hematite platelets — trichroism and aventurescence in a single crystal. Fine material, associated with India, is a phenomenal-gem collector's delight.When available at GEMIC Institute, each iolite sunstone is natural, certified in our laboratory and filmed to capture both effects on the exact stone. Ask about availability — these never linger.